http://www.24hoursoflemons.com/

"The 24 Hours of LeMons is restricted to cars that were purchased, fixed up, and track-prepped for a total of $500 or less. At most venues, the racing consists of tech inspection and track testing on Friday; long-ass endurance-race sessions on Saturday and Sunday; and breaks for sleeping, eating, and Band-Aid application every night. At least once a year, we also hold a straight 24-hour endurance race. Count on plenty of noise, prizes, water fights, and questionably civilized fun before, during, and after the track sessions. Finally, assuming you're still standing, there's the gala awards ceremony, wherein we present trophies, plaques, and winner's purses paid out in nickels."

The 24 Hours of LeMons Photo Gallery (unfortunately all are on FaeceBook):
http://www.24hoursoflemons.com/contentpage.aspx?Id=6613

Racing camper van:
http://i1.ytimg.com/vi/aAgZktgNANk/hqdefault.jpg
https://i822.photobucket.com/albums/zz148/SpeedycopPics/popupracecamperrear.jpg
http://blog.caranddriver.com/wp-content/uploads/2013/01/04-Great-24-Hours-of-LeMons-Cars-of-2012-626x426.jpg
https://i822.photobucket.com/albums/zz148/SpeedycopPics/popupracecamperfront.jpg

Spirit of Lemons (Cessna):
http://cdn.speednik.com/files/2013/06/24_hours_of_lemons_plane_car_2.jpg
https://i822.photobucket.com/albums/zz148/SpeedycopPics/spiritoflemonsdonerightside_zpse38fe97d.jpg

Upside down race car:
http://hooniverse.com/wp-content/uploads/2013/08/invert_camaro1_720.jpg
http://static3.businessinsider.com/image/520a3f0eeab8ea4d79000005-480-/speedycop-24-hours-lemons-upside-down-car-2.png
http://file2.stuff.co.nz/1376257855/468/9030468.jpg
http://www.drpneu.com/wp-content/uploads/2013/08/LeMons-NJMP-Day-One-Upside-Down-Camaro-Leads-Big-over-Rolls-Placement-626x382.jpg

"The car is actually two cars: a 1990 Ford Festiva, around which he wrapped the upside-down body of a 1999 Chevy Camaro in a process that took around two months."

Remember the car that Homer Simpson designed? Someone actually built it ...

http://laughingsquid.com/wp-content/uploads/2013/07/homer2.jpg (the cartoon original)
http://randommization.com/wp-content/uploads/2013/06/The-Homer-by-Porcubimmer-Motors_2-600x408.jpg 
httpImage/image.jpg_gen/derivatives/landscape_635/homer-1.jpg">http://assets.nydailynews.com/polopoly_fs/1.1393011!/img/httpImage/image.jpg_gen/derivatives/landscape_635/homer-1.jpg
http://www.geekosystem.com/wp-content/uploads/2013/06/thehomer-640x354.jpg
http://randommization.com/wp-content/uploads/2013/06/The-Homer-by-Porcubimmer-Motors_4.jpg
http://m5.paperblog.com/i/57/579758/real-life-version-of-homer-simpsons-dream-car-L-ZvgsYR.jpeg
http://randommization.com/wp-content/uploads/2013/06/The-Homer-by-Porcubimmer-Motors_3.jpg
http://cdn2.motors.co.uk/v2live/content/2013/7/homer.png