Complex sentence: Unlocking vehicles is done by beating the vehicle whilst avoiding any collisions (with other vehicles or going off the track) in the "Free Race" mode, again this is totally different from the way cars are unlocked in Gran Turismo games.
Split into simpler sentences: Unlocking vehicles is done by beating the vehicle whilst avoiding any collisions (with other vehicles or going off the track) in the "Free Race" mode. This is again different from the way cars are unlocked in Gran Turismo games.