Place all cars into a single collection and clean up game loop
Update sprite sheet

-Change zucchini color
-Add sprites for squashed zucchini and plant
Add hitboxes to Player
Add player-to-vehicle collision detection

-Check if the player's top left or bottom right corner is withing a vehicle's hitbox
Only draw hitboxes when in a populated lane
Miscellaneous cleanup

-remove global variables in main
-move lives property to Player class
-change game loop condition to lives > 0
-remove redundant properties from class constructors
Add Props class and create a splat when the player gets run over
Fix warnings in main and reformat code
Define Platform class