Class: Vehicle

Attributes:
Color (string)
Electric (boolean)
Currentfuel (float)
Totalfuel (integer)
Bumperstickers (array)

Methods:
Calculatepercentfull (Divide totalfuel by currentfuel)
Refill (subtract currentfuel from totalfuel, and refills that amount)
Addbumperstickers (add stickers to array)
Electrictest (determines if vehicle is electric)
changepaintcolor (changes color of car exterior)