A car produces about one pound of CO2 per mile. There is no problem with collecting the CO2 in the tailpipe, but one might easily end up with a trailer hitched to the car for carrying all this CO2 back to the filling station. The gas burned from a 15-gallon tank would fill up five 60-inch-tall gas bottles.
I love watching the Oscars and seeing everybody saying all that 'it's an honour just to be nominated' rubbish. Then you see their faces when the split screen comes up as the winner is announced - the losers are all smiling through gritted teeth and looking as if they just swallowed half a pound of soor plooms.
Don't eat shrimp - it's one of the most unsustainable fish. For every pound that's caught, 10 or 20 pounds of other stuff is killed and dumped back overboard. It's the number one killer of juvenile sea turtles in Mexico. Two good sustainable seafood guides that I'd recommend are from the Monterey Bay Aquarium and the Blue Ocean Institute.