I installed a few AB relays awhile back on a FAA strobe light. It wasn't an ice cube relay, and it had reversible contacts, which could be upgraded for higher capacity. I'm pretty sure they could handle your requirements. I don't remember the bulletin but i'll check.
I would think that there would be huge collection of prints for an electric car if it had already been built. I would like to see a good schematic also, especially if it is an electric car I would be working on.
Cement Plant Electrician and
Instrumentation Technician