Katie van Houten, center, walks by a 2016 Tesla Model X electric car Saturday during the Drive Electric Earth Day event at Thomas College in Waterville.

Katie van Houten, left, Annie Young, center, and Kaylee Maraffa, right, peer i to a 2016 Tesla Model X electric car Saturday at the Drive Electric Earth Day event at Thomas College.

Katie van Houten takes a seat in a 2016 Tesla Model X electric car Saturday at the Drive Electric Earth Day event at Thomas College.

Paul Buckley, of Stockton Springs, sits in the passenger seat of his 2016 Tesla Model X as he gives a test drive to interested drivers Saturday at the Drive Electric Earth Day event at Thomas College in Waterville.