Freda Poundstone, a Colorado politician and lobbyist best known as author of a constitutional amendment that limited Denver's ability to annex land, has filed a ballot initiative that would reduce state taxes on cars and income, bringing the latter down -- bit by bit -- from 4.5 to 3.5 percent. The initiative has received a less than friendly reception by state leaders who are trying to balance an out of whack budget, the Rocky Mountain News reports.