Arcimoto has created a $12,000 electric trike - and we checked it out

It's easy to tell the difference between a motorcycle and car, right? One has two wheels, one has four.

Except that there are now plenty of vehicles available that have three wheels.

There's the Can-Am Spyder, the Campagna Motors T-REX, and the Polaris Slingshot, to name a few. There's also the Elio, which recently paid a visit to out New York office.

Soon to join the party is the all-electric Arcimoto SRK (those aforementioned rides all run on gas), effectively a $12,000 tandem three-wheeler motorcycle that can be outfitted with a fully enclosed "cabin" or converted to delivery van duty.

I've samples the T-REX and the Slingshot, which run on gas, as does the Spyder. Obviously, the SRK is something different.

It might be the ultimate city vehicle. And we checked it out: