From: Breitbart

MCMINNVILLE, Tenn. (AP) – High gas prices have driven a Warren County farmer and his sons to hitch a tractor rake to a pair of mules to gather hay from their fields. T.R. Raymond bought Dolly and Molly at the Dixon mule sale last year. Son Danny Raymond trained them and also modified the tractor rake so the mules could pull it.

T.R. Raymond says the mules are slower than a petroleum-powered tractor, but there are benefits.

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Video: Farmer Saves $70 a Day by Trading Tractor For Mule Power