BMW cars were having back mounted engines earlier.
Santa purchased a new BMW and was driving back to home very happily. On the way the car broke down. Santa came out of the car and opened the bonnet, trying to fix up the problem. Immediately began to sweat.
By that time Banta came by that way and saw our Santa, totally confused and sweating, trying to search something inside the bonnet, and asked him what was the matter.
Santa: "The BMW people made me fool.They have given me the Car without the engine."
Banta: "Don't worry. I have spare engine in the back of my BMW. You can take that."