I should reward Espatier for catching me in a guffaw. Yes. The Jeep is an aerodyne vehicle not a land craft. No wheels, handles differently, etc. Drive is not the appropriate skill for it. Drive Aerodyne is the right skill. So, as Espatier had Charlie explain, Casino would either have to have the skill or be chipped to drive the machine. This would change the layout of the seating arrangement to (and taking posts already made in mind)...
Driver: Cred Stick Charlie or Echo
Shotgun (PS1): Casino or Echo
DS2: Cred Stick Charlie, Casino, or Echo
PS2: Bloodbank
DS3: Ghlahn
PS3: Fixer (Blossom on his lap)
No need to adjust posts as I'll make the adjustment when I put everything together.