Self-driving cars are becoming increasingly intelligent, but whether they'll ever be ubiquitous and fully capable remains unclear. Tesla notes (for now) that its Full Self Driving Capability is ...

Drivers looking to improve their MPG might consider switching to cruise control. However, this will work best on flat roads with little traffic.

Cruise control keeps your car at a steady speed and slashes gas consumption as a result. However, it won't save you money in certain conditions.