Dreaming of test-driving your ideal car overnight or through your commute? With new car prices and monthly payments hitting record highs (avg. $770), a 30-minute spin no longer cuts it—longer drives help spot hidden issues like seat comfort or car seat usability.

But read the fine print: Cadillac’s Lyriq offers 48-hour drives (200-mile cap, leave your car at the dealership); Tesla has similar limits; Alfa Romeo dealers vary (2-4 days); Land Rover caps at 50 miles but cleans your car.

Ever tried an extended test drive? Any surprising rules?