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(Benny Hill song: Ernie the fastest milkman in the west)
...... "One lunch time Ted saw Ernie's horse and cart outside her door,
It drove him mad to find it was still there at half past four.
And as he lept down from his van hot blood through his veins did course,
And he went across to Ernie's cart and didn't half kick his 'orse.
Whose name was Trigger, (Triggerrrrrrrr)
And he pulled the fastest milk cart in the west."
Note that when a vehicle turns, the front wheels will have to turn by different angles so that there is no slippage. In a turn, the inner front wheel will have a larger cut. This is achieved by a mechanism known as Ackerman linkage.