1. The Smart Fortwo:
* Current models are primarily electric: The current generation Smart Fortwo (and the Forfour) are primarily electric vehicles, though there might be some older models still around that run on gas.
* There were gas-powered Smart Fortwos: In the past, Smart did produce gas-powered versions of the Fortwo.
2. "Smart cars" in general:
* "Smart car" can be a general term for small, fuel-efficient cars: Many manufacturers make small, fuel-efficient cars, and some of these might be hybrids (running on both electric and gas).
* There are hybrid cars: Hybrids do run on both electric and gas, using the electric motor for low-speed driving and the gas engine for higher speeds and to recharge the battery.
So, to be clear:
* The current Smart Fortwo is primarily electric.
* There were gas-powered Smart Fortwos in the past.
* There are hybrid cars that run on both electric and gas, but not all "smart cars" are hybrids.
If you're interested in a specific model, it's best to check the manufacturer's website or look up the specific car you're interested in to see what kind of powertrain it has.
