Generally, I think Rapido uses power pickup for HO and battery power for N scale. I read somewhere that they're still trying to figure out the cab car, you'll probably need a forum post from them to clarify.
I’m interested to see the truck too. My walthers (HO) amfleets have earned the name “Amstones”. They are bricks.
I sold mine even before getting out of HO. There's no point in keeping them when you can't run them. The fact that the lighting was completely bonkers wrong made it a no-brainer.