Pointless & impractical vehicles

[presta]

 

[Reynard]

That's what you get when Aragog mates with Mr Weasley's Ford Anglia...

 

[Bristolian]

Just had a closer look at that one

and I'm confused about the rear wheels of the car bit

Apparently the rear wheels of the "car" bit tuck up into the back wings when the back and front are connected. Look up Plymouth Voyager 3 on Wikipedia.