The Cash for Clunkers program is hurting some charitiable organizations.

The popular car buying incentive has been a huge hit with car buyers looking to snap up rebates of for trading in guzzlers for new fuel efficient cars.

But charities that rely on vehicle donations for funding say they are receiving fewer cars and trucks.

Texans Can, a charity that helps at-risk teens and their families, says some prospects have decided to trade in their vehicles, instead of donating them.

The National Kidney Foundation estimates a ten to 15 percent decline in vehicle donations due to the Cash for Clunkers program.