Having a gigantic flashlight powered by D batteries in the truck went out with the Pinto. Nowadays it is all about LEDs and rechargeable technology. With cars now including spare 12V DC outlets, better known as cigarette lighter outlets, it is a no-brainer to make a flashlight that recharges through that port.
These rechargeable LED lights come in variety of fun colors, are constructed of high-grade aluminum and will shine for 120 minutes with a seven hour charge. It's available for $25 each. I would buy one hoping to never have to use it, but you never know when one of those newfangled cars will break down.