Based on the 'toybota' by Thejosephracer, and the outboard motor from the 'Speed Boat Revamp' by Rcb1235, this is a combination of Jeremy Clarksons two Amphibious cars, The Toybota, and The Nissank. These two cars (based off of a Toyota Hilux and a 1996 Nissan D21 pick-up truck respectiveley) both worked quite well, until the toybota rolled over at the very end of the challenge. You can see the wiki pages here: toybota http://topgear.wikia.com/wiki/Toybota / Nissank http://topgear.wikia.com/wiki/Nissank.

Controlls:
Pitch/roll : normal driving
Throttle : outboard motor
Yaw : outboard steering
VTOL : outboard raise/lower
Group 1 : headlights

if i forgot anything please comment and i will add it :)

Thanks!