After finding a vehicle, you must bring it to one of Marior's garages in a town you have liberated. It is recommended to first play some Land Races (challenges) to unlock the Vehicle Detector mod. When a missing vehicle is nearby, the radar will display its location. When entering a missing vehicle, you will see a blue garage icon next to its name (bottom left of the screen). To view all the vehicles you have found, go to the Rebel Drop list or to "Progress" - "Garage Blueprints". The following are some tips for finding vehicles.
There are 18 Land Races, and many of them let you drive a new vehicle. Liberate all settlements to unlock them. When a Land Race has a new vehicle, immediately quit after the race begins and drive the vehicle to a nearby garage. Fast travel from one large town to the next and check the parking spots near the garage, as there are always some random vehicles in that area. You can also keep fast travelling to the same town and new vehicles will spawn in the parking spots every time. Stand at a road with the Vehicle Detector mod and wait for a missing vehicle to come by. Another strategy is to fly over streets with the wingsuit and Vehicle Detector mod. If a vehicle does not spawn at the location in the video, move on to the next one and return later. If it is still not there, keep fast travelling to the nearest challenge or settlement and it will spawn after a while. There are other military vehicles such as tanks, attack helicopters, and fighter jets that are unlocked by liberating all military bases, completing the story, and finding collectibles -- all of which comes through natural progress (needed for the "Unlocked And Fully Loaded" achievement). The order in the video is the same as the in-game Rebel Drop list. Everything from one vehicle category will be shown before moving onto the next category.
Motorcycles
'69 Stria Sussurro - 0:05
Mugello Furia MS-316 - 0:27
MV402 - 1:07
Stria Risata - 1:46
Stria Giovanni - 2:20
Vintage Stria M7 - 2:52
Pavouk U-15 - 3:21
Off-Road
Geschwind V3000 - 4:00
Autostraad Kletterer 300 - 4:30
Vintage Cars
Weimaraner W3 - 5:06
'63 Autostraad Weltbus - 7:16
Stria Cucciola - 7:48
Stria Infimo S - 8:18
Stria Carera Standard - 8:47
Stria Carera G - 9:19
Modern Cars
Autostraad D90 - 10:00
Stria Joia - 10:33
Stria Kavala - 11:03
Stria Gioco - 11:41
Stria Toro - 12:13
Sports Cars
Windhund 4 - 12:53
Autostraad D700 - 13:37
Kerner Serpente R - 14:15
'13 Vigueur - 14:51
Mugello Raffinati Vitesse - 15:28
Mugello Vistosa - 16:12
Mugello Quipozza F - 16:50
Verdeleon 3 - 17:33
Mugello Farino Duo - 18:15
Utility Vehicles
Stria Ghepardo 3S - 18:53
Autostraad Reisender 7 - 19:17
'05 Charmant - 20:30
Stadt Tresor ST 8530 - 21:04
Nashorn 6100 - 21:46
Citispeed Eco 75 - 22:26
Stria Switzo Ambulance - 23:04
Stria Switzo - 23:42
Stria Obero - 24:12
Stria Rustico - 24:50
Stria Campania 115 - 24:15
Sea Vehicles
Minnow Fishing Boat - 25:52
Whaleshark - 26:21
Brise 32 - 27:07
Dame De La Mer 99 - 27:42
Pescespada SS - 28:23
Stria PW 220 R-GT - 29:04
Squalo X7 - 29:33
Helicopters
News Chopper - 32:58
Planes
Stria Ghibli - 33:38