Fillmore from Pixar's movie Cars is a 1960 VW bus and Radiator Springs' resident hippy.  Fillmore is voiced by George Carlin and has over 60 bumpers stickers:

“Recycle Your Oil”
Three “Flo’s V-8 Café” stickers
“Free Mother Road”
“Groovy and Love
“Portland Concrete on My Mind”
“Please Recycle”
“No Interstate”
“Go Natural, Drink Organic Fuels”
“Certified Organic Oil”
“Home Sweet Road”
“I’m an Eco-Bus”
Six “Peace” signs
“Stop the Superslab”
“Your Mother Road Loves You”
A flower
A heart with 66 in it
Oval RS
“Ornament Valley”
“Open Road U.”
A rainbow
“Peace on the Open Road”
A rainbow butterfly
Recycling emblem
A Route 66 shield
“Turn On to Recycling”
“Life Begins at the Offramp”
“My Inner Car is Electric”
A sticker that has a 66 shield on it with a tire track over that says “Tread on Me”
“Recycling: It’s a Gas”
“Save Mother Road”
“Flower Power”
“I (heart) Recycled Oil”
“Drink Organic Oil”
“Free Mother Road”
“Question Interstate”
Recycling symbol with “Take a Drive on the Wild Side”
“100% Organic Fool”
“Fillmore Organic Fuels”
Recycling emblem
“Pardon My Backfire, I Eat Veggie Fuels”
“Save 2-D Animation”
“One Way” (recycling symbol)
“Interstate” inside a stop sign
“I Brake for Jackalopes”
“Support Organic Refiners”
“I (heart) 2 Recycle”
“Recycle Your Oil” with a yin-yang symbol
An oil derrick with a slash through it
“It’s Not Nice to Fool Mother Road”
“100% Organic”
A bigger 66 shield and a heart
“Got Solar?”
“Oil” with a recycling symbol in the “O”
“Born to Recycle”
“I (heart) Recycled Oil”
“Certified Organic Oil”
“Go Natural – Drink Organic Fuels”
A sun with a recycling symbol in the center
A flower
“Drink Organic Oil” with flower in it
“100 Percent Organic Oil”
“Interstate” with a slash through it
66 shield with a rainbow
51237 is the license plate, which is George Carlin’s date of birth