Big & Rich's John Rich has placed his Corvette on eBay and all proceeds will be donated to Vanderbilt Children's Hospital in Nashville. The minimum bid is $50,000. The black hardtop coupe has been featured in Corvette Quarterly and on CMT and has only 17,800 highway miles. Celebrity drivers include Gretchen Wilson and Kid Rock, according to a description on the Web site. The auction ends on Wednesday (Aug. 8).