Its called 'Desert Bus'. You drive a bus from Tucson, Arizona to Las Vegas, Nevada in real time. It takes 8 hours to complete the journey and the game cannot be paused or saved at any point. You drive on a straight road with little scenery and no traffic but if you go off the road you will have to wait for a tow truck to come get you. The tow truck comes from the beginning and takes you back to the start. So if you are say.. 3 hours into your journey and crash.. you have to wait 3 hours for the tow truck to come and 3 hours for it to take you back. Although the road is straight, you cannot just hold down the forward arrow, as the bus veers slightly to the right and you have to alter its course to avoid going off the road. Reaching Las Vegas will award you with 1 point and give you a few seconds to decide if you want to drive back to Arizona or not. If you drive back and make it, you will receive another point. You can keep driving back and forth to earn points.
Goodluck!
http://desertbus-game.org/plain-index.php