Not since the oil embargo of several decades ago has U.S. law enforcement faced such a serious challenge from rising petroleum costs. The price of gasoline at the retail pumps has risen above $2 per gallon, nationwide. And along with the increased cost of gasoline comes upward pressures in the price of other products based in whole or in part on petroleum consumption, including tires, motor oil and lubricants, heating fuel, and electricity, all of which will stress already tight police budgets.