Sirius is highly dependent on the willingness of auto companies to equip cars with digital receivers.
It will cost motorists anywhere from $10 to more than $100 to equip their phones and cars with hands-free devices.
Sport package equipped cars also get a viscous limited slip differential.
It could also have been used in place of 75mm gun equipped armoured cars.
He ordered automakers to equip cars with seat belts.
Equipping cars with devices that will actually help contol the vehicle's movements presents far more difficult legal problems, he said.
Designed for Trans Am racing, the rules required factory production of 2,500 spoiler equipped cars.
Auto makers have increasingly been equipping cars and light trucks with exhaust systems made of stainless steel.
Climate control equipped cars were given a vent in the back of the glove box so it could be climate controlled.
Equip cars with portable lighting for use by passengers in an emergency.
