Say you're taking some clients to an afternoon lunch meeting at the Bellagio and you want to wow them into submission. That's where Diplomat's hourly rates for a number of exotic cars come into play. Their Maybach 62, Lamborghini Murcielago Spider, Bentley Flying Spur, Rolls-Royce Phantom and the wild-looking Campagna T-Rex can be had for a four-hour minimum, usually. The rest of the fleet covers you for longer drives, with 2006 Porsche 911 Carerra S going for $450 per day, and the Ferrari 360 Spider going for $1,500 per day. Diplomat offers a number of deals on three-day rentals.

Suggested drive: Route 147 east to Route 167 through the Lake Meade National Recreation Area; also Route 15 north to Route 93 north to the Desert National Wildlife Refuge