Who said "Tractors are the best friends a car could ask for."?

This quote is attributed to Mater.

Tractors are the best friends a car could ask for. - Mater

"Tractors are the best friends a car could ask for."

Mater Friendship

"I'm a tractor tippin' fool!"

"Dadgum!"

"Well, I'll be!"

"You're my best friend!"

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."