Bill Of The Day: How Many Cigarettes Does It Take . . . ?

Not that we have a dog in this fight, but just curious . . . it seems that Senator Ralph Northam (D-6, Norfolk), late of rumor fame that he considered flipping the balance of power in the Senate yesterday (see BearingDrift) —something that held up Senate proceedings for four hours — had his SB 1106  pass that chamber on a 30-10 vote. The bill would prohibit smoking in cars in which children are present. According to a blurb today in the Richmond Times-Dispatch, Senator Northam, a physician, told his colleagues on the floor that riding in a car for an hour with someone who smokes is equal to smoking 10 cigarettes.

We're not doctors here, but: How many cigarettes does one smoke in an hour in a car? Let's say five. If the non-smoker is theoretically taking in the equivalent of 10 smokes, how many is the actual smoker taking in? Is the doctor saying one cigarette is equal to more than one cigarette? Or is math calculated a little different in med school?