With fully solar models finally hitting the market and major car brands like Toyota announcing solar-aided EVs, it seems like sun-powered cars could finally become a reality. They offer plenty of potential savings but also lots of reasons to question their reliability.

State and local governments spend around $200 billion on highways and roads each year, and yet, countless cities still struggle with horrible gridlock. Do we need more roads or a better way to get around in the first place?

Electric cars are exploding in popularity, offering us a glimpse at a world where we’re totally independent of gas-powered vehicles. But concerns about batteries, lithium mining, and production processes make some eco-conscious drivers worried.