Take one soft top Land Rover sans door tops with the roof rolled up.

Add small boy and mother, allow him to have a play in the drivers seat, then take him for a short drive, repeat as necessary...


Young Jack is now definitely a convert, literally shoving me out of the door so he could get back in the drivers seat when I parked it and switched it off.
Run out for the local classic car rally tomorrow, although flying solo as Jack's a little small to be riding shotgun with me in a motor with no seat belts.