diff --git a/src/main/kotlin/eu/fosil/okupamicoche/dto/TravelDto.kt b/src/main/kotlin/eu/fosil/okupamicoche/dto/TravelDto.kt
index 525886c..bdaee5d 100644
--- a/src/main/kotlin/eu/fosil/okupamicoche/dto/TravelDto.kt
+++ b/src/main/kotlin/eu/fosil/okupamicoche/dto/TravelDto.kt
@@ -3,20 +3,21 @@ package eu.fosil.okupamicoche.dto
 import eu.fosil.okupamicoche.entities.Travel
 import eu.fosil.okupamicoche.entities.TravelId
 import eu.fosil.okupamicoche.entities.UserIdNotFoundException
+import eu.fosil.okupamicoche.entities.UserNotSpecifiedException
 import eu.fosil.okupamicoche.repositories.UserRepository
 import org.springframework.data.repository.findByIdOrNull
 
 class TravelDto(
     // Los campos deben ser públicos para que aparezcan en el JSON
     val id: TravelId? = null,
-    val driverInfo: UserInfoDto,
-    val travelersInfo: List<UserInfoDto>,
-    val departureDate: String,
-    val origin: String,
-    val destination: String,
-    val places: Int,
+    var driverInfo: UserInfoDto? = null,
+    val travelersInfo: List<UserInfoDto> = emptyList(),
+    val departureDate: String = "",
+    val origin: String = "",
+    val destination: String = "",
+    val places: Int = 0,
     val description: String? = null,
-    val matrixRoomId: String
+    val matrixRoomId: String = ""
 ) {
     constructor(travel: Travel) : this(
         travel.id,
@@ -31,19 +32,22 @@ class TravelDto(
     )
 
     fun toTravel(userRepository: UserRepository): Travel {
-        val driver = userRepository.findByIdOrNull(driverInfo.id) ?: throw UserIdNotFoundException()
-        val travelers = travelersInfo.mapNotNull { t -> userRepository.findByIdOrNull(t.id) }
-            .toMutableList()
-        return Travel(
-            id,
-            driver,
-            travelers,
-            departureDate,
-            origin,
-            destination,
-            places,
-            description,
-            matrixRoomId
-        )
+        driverInfo?.let { driverInfo ->
+            val driver = userRepository.findByIdOrNull(driverInfo.id) ?: throw UserIdNotFoundException()
+            val travelers = travelersInfo.mapNotNull { t -> userRepository.findByIdOrNull(t.id) }
+                .toMutableList()
+            return Travel(
+                id,
+                driver,
+                travelers,
+                departureDate,
+                origin,
+                destination,
+                places,
+                description,
+                matrixRoomId
+            )
+        }
+        throw UserNotSpecifiedException()
     }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/eu/fosil/okupamicoche/entities/ApiResponse.kt b/src/main/kotlin/eu/fosil/okupamicoche/entities/ApiResponse.kt
index 1fc965a..397848e 100644
--- a/src/main/kotlin/eu/fosil/okupamicoche/entities/ApiResponse.kt
+++ b/src/main/kotlin/eu/fosil/okupamicoche/entities/ApiResponse.kt
@@ -3,9 +3,11 @@ package eu.fosil.okupamicoche.entities
 import com.fasterxml.jackson.annotation.JsonInclude
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
-class ApiResponse<T>(val success: Boolean, val data: T?, val error: ApiError?) {
+open class ApiResponse<T>(val success: Boolean, val data: T?, val error: ApiError?) {
     constructor(success: Boolean, data: T) : this(success, data, null)
     constructor(success: Boolean, error: ApiError) : this(success, null, error)
 }
 
+class ApiErrorResponse<T>(code: String, msg: String?) : ApiResponse<T>(false, ApiError(code, msg))
+
 class ApiError(val code: String, val msg: String?)
\ No newline at end of file
diff --git a/src/main/kotlin/eu/fosil/okupamicoche/entities/Exceptions.kt b/src/main/kotlin/eu/fosil/okupamicoche/entities/Exceptions.kt
index fec60d5..ac38e0d 100644
--- a/src/main/kotlin/eu/fosil/okupamicoche/entities/Exceptions.kt
+++ b/src/main/kotlin/eu/fosil/okupamicoche/entities/Exceptions.kt
@@ -1,3 +1,5 @@
 package eu.fosil.okupamicoche.entities
 
-class UserIdNotFoundException : Exception()
\ No newline at end of file
+class UserIdNotFoundException : Exception()
+
+class UserNotSpecifiedException : Exception()
\ No newline at end of file
diff --git a/src/main/kotlin/eu/fosil/okupamicoche/spring/controller/ApiRestController.kt b/src/main/kotlin/eu/fosil/okupamicoche/spring/controller/ApiRestController.kt
index aa11dbc..5a52cef 100644
--- a/src/main/kotlin/eu/fosil/okupamicoche/spring/controller/ApiRestController.kt
+++ b/src/main/kotlin/eu/fosil/okupamicoche/spring/controller/ApiRestController.kt
@@ -1,6 +1,6 @@
 package eu.fosil.okupamicoche.spring.controller
 
-import eu.fosil.okupamicoche.entities.ApiError
+import eu.fosil.okupamicoche.entities.ApiErrorResponse
 import eu.fosil.okupamicoche.entities.ApiResponse
 import eu.fosil.okupamicoche.entities.UserIdNotFoundException
 import org.springframework.security.core.context.SecurityContextHolder
@@ -13,7 +13,7 @@ interface ApiRestController {
             ApiResponse(true, data)
         } catch (e: Exception) {
             e.printStackTrace()
-            ApiResponse(false, ApiError(e.javaClass.canonicalName, e.message))
+            ApiErrorResponse(e.javaClass.canonicalName, e.message)
         }
     }
 
diff --git a/src/main/kotlin/eu/fosil/okupamicoche/spring/controller/PrivateTravelRestController.kt b/src/main/kotlin/eu/fosil/okupamicoche/spring/controller/PrivateTravelRestController.kt
index 2b5d000..0aee7c6 100644
--- a/src/main/kotlin/eu/fosil/okupamicoche/spring/controller/PrivateTravelRestController.kt
+++ b/src/main/kotlin/eu/fosil/okupamicoche/spring/controller/PrivateTravelRestController.kt
@@ -1,12 +1,14 @@
 package eu.fosil.okupamicoche.spring.controller
 
+import eu.fosil.okupamicoche.dto.ListDto
+import eu.fosil.okupamicoche.dto.TravelDto
+import eu.fosil.okupamicoche.dto.UserInfoDto
 import eu.fosil.okupamicoche.entities.ApiResponse
 import eu.fosil.okupamicoche.entities.TravelId
 import eu.fosil.okupamicoche.entities.UserId
+import eu.fosil.okupamicoche.entities.UserIdNotFoundException
 import eu.fosil.okupamicoche.repositories.TravelRepository
 import eu.fosil.okupamicoche.repositories.UserRepository
-import eu.fosil.okupamicoche.dto.TravelDto
-import eu.fosil.okupamicoche.dto.ListDto
 import eu.fosil.okupamicoche.usecases.travel.*
 import org.springframework.data.repository.findByIdOrNull
 import org.springframework.validation.annotation.Validated
@@ -23,6 +25,8 @@ class PrivateTravelRestController(
     @RequestMapping("/create")
     fun createTravel(@ModelAttribute @Validated travel: TravelDto): ApiResponse<Unit> {
         return response {
+            val driver = userRepository.findByIdOrNull(getCurrentUserId()) ?: throw UserIdNotFoundException()
+            travel.driverInfo = UserInfoDto(driver)
             CreateTravel(travelRepository).createTravel(travel.toTravel(userRepository))
         }
     }