Truck and halftrack carried infantry

[JonS1]

The idea that halftracks charged into battle alongside the infantry is a little off. By and large armoured halftracks were used as mobility means, not assaulters. The tracks would get the grunts to the FUP, and from there they'd be on foot. To take an extreme example - Pz Lehr sent most of it's carriers 100s of kms away from the front once the division had arrived at the front in Normandy.

By the same token, truck mounted troops didn't always hop off their trucks in out of the way spots. It isn't hard to find examples of NZ infantry in NA approaching enemy positions mounted in trucks, and only disembarking within ~500m when the incoming small-arms fire strated to get too effective. Similar examples for German truck mounted infantry are equally easy to find.

Trucks should always have lower movement rates than halftracks, except when moving along roads, IMO. The amount it is lower will depend on the specific terrain.

I think motorized units should not so easily be able to mount up again. As trucks did not organicly belong to the unit

This is not a universal truism.