I wasn't sure where to post this, but I'm thinking of building a small electric tractor/tow rig for the shop, and wondered how much power I actually need to pull a car around. I have a 1/2 HP motor off my mom's old washing machine, also rated at 120 volts, 60 hertz, and 8 amps. Sorry if that's redundant, I'm not well versed in electrics much beyond car batteries and alternators. Would this, powered by a heavy duty commercial battery, kept charged by a gas powered alternator, be enough power to pull a car around, such as a 60's impala?