Owning a classic car can be equal parts joy and headache. Parking a car for too long leads to problems, and this is how often and why you should drive your car.

I started critiquing cars at age 5 by bumming rides home from church in other parishioners’ new cars. At 16 I started running parts for an Oldsmobile dealership and got hooked on the car biz.

According to Ashok Elluswamy, a Tesla engineer, the car drove 72 miles per hour on a Texas highway. Musk said it was the first time a self-driving car drove on the highway, but that's not quite right.