So, 4 motors . As I stated at the start of this topic.
If I combine the data I can find easely on Sandstorm,
24mph(almost 40kph)
4-1 gearratio
Guess on 5" wheels.
Maytech 50 or 63mm motors.

I guess the Maytech MTO5065 170 HA-C is the lightest option. 1800W+ each. 7Kw of drivepower. Sounds a bit like 37V powered Bosch 750's or equivalents.

With 1 size bigger, the MTO6355 170 HA-C that power about doubles per motor. Giving the very nice 14Kw...
Not 1 kw of the NPC drive proposed in this thread.