ATLANTA, Georgia (CNN)  Larry Horsley and David Kennington are fed up. They’re among a growing number of Americans who are refusing to wait for big-car manufacturers to deliver mainstream electric vehicles, called EVs. Not only have they rebelled against the status quo by ripping out their gas-guzzling engines and replacing them with zero-emission electric motors, they say just about anyone can do it. The average cost? around $12k. The truck can travel about 40 miles without damaging the lead-acid batteries before the vehicle needs recharging, Horsley said. But he said 40 miles is enough to get to and from work and run errands around town.

Kennington said he’s waiting for better battery technologies, like nickel-metal-hydride and lithium-ion, to become more affordable. Those batteries can provide more power with less weight for increased range, but currently cost $10,000 to $20,000 per set, compared with about $2,000 for lead acid batteries, he said.

Anyone who has basic mechanical skills can build one of these,” Horsley said. “But it takes time,” he said, about three months. Most of that period was spent waiting for the parts to be shipped.

He’s got the motor of his maroon S-10 pickup set up to run on 20 six-volt batteries, the same kind used in golf carts. The motor connects to an existing manual transmission to propel the truck up to 60 mph.