It was the last car on the rental lot: a white Nissan Altima that looked as if it had hit every pothole and puddle between Ohio, where it got its licence plate, and Fort Lauderdale, where it was now parked.
I was at the beginning of a long weekend and had about 600 miles of driving ahead of me. This time, I vowed, I would give myself the kind of upgrade the rental agency wouldn't — a heads-up display from Navdy, a $US499 ($655) aftermarket gadget that sits on top of your dash and gives almost any car that Top Gun feeling.
