(WBIR - KNOXVILLE) No juice.

That's a frustration shared by electric car drivers looking to charge up on the University of Tennessee campus. It's a no go.

UT has 17 car charging parking spaces on campus. The city of Knoxville operates 24.

Right now UT's are down for maintenance, with no timetable on when they'll be fixed.

Those who like to get behind the wheel say more places to charge means more opportunities for the eletcric cars.

"It seats three and has a top speed of about 75 miles per hour," said John McMillan of Shockwave Motors.

Whether on three wheels or four.

Electric cars of all shapes and sizes were on display Friday at the Drive Electric Week event in Farragut.

"People think that electric cars have to be all things to all people, and that's not really the case. Electric cars can serve a purpose, a niche, and that's what we're after - a target niche of commuters," explained McMillan.

Right now electric car drivers on UT's campus can't charge their rides.

According to a spokesman for the school's Office of Sustainability, they're considering upgrading to DC Fast chargers.

"Instead of needing to park there for two to three hours or all day if they're a student they could pull in and in 15-20 minutes have enough charge to go another 80 to 90 miles," explained Jonathan Overly, executive director of the East Tennessee Clean Fuels Coalition.

Car sellers were also on hand.

They say buyers need to examine how many miles they're putting in before switching to electric.

"How many miles do you drive? If it's a lot of miles it's probably not the correct car for you, but if it's around-town, city driving it works for just about everyone," said Roger Wittman with Twin City Nissan.

Seeing public places to charge electric cars is good news for folks considering buying one.

The city of Knoxville operates 24 parking spaces that offer charging for a small fee.

"I'm very excited about this and I think it's going to take a little time, but it's going to become common place," said Bob Potts.

The city of Knoxville provides charging for a small fee.

Right now they're not looking to expand their network. Instead, they plan to upgrade what they already have.