why do sardar get teased so much?

Sardarji bought a brand new Maruti and decided to drive down from Amritsar, where he lived, to Jalandar to meet his friend. He reached there in a few hours. After spending a few days there, he decided to return, and called up his mother to expect him in the evening. But he didn't reach in the evening and not the next day either. When he finally reached home on the third day, his distraught mother ran and asked him " Arre Puttar, ki hoya?" (What Happened, My Son?) The Sardarji got out, obviously very tired from a long journey, and said, "Oy, ye Marutti wale pagal hain, agge jaane waaste chaar gear banaate hain, aur pichche jaane waaste sirf ik?" (These Maruti Car people are crazy! They have four gears for going forward, but only one for going back!)