shurtrax from seal-pak??!!??!!

anyone ever used one of these???

http://www.autoanything.com/hitch-bed-accessories/65A2868A0A0.aspx

seems like a really good product(with some real good reviews too). im actually thinking of getting one of these. gas mileage may go down a bit, but it may make for a smoother riding truck on the interstates that im on every day, as well a provide traction if i do happen to get some snowy/icy weather my way. and it may help off road bit also.

anyone got pros/cons on the shurtrax????

 

Dunno, 400 lbs of sand filled load bags from Wal-Mart is a hellofa lot cheaper. Think I paid $2 each for 60lb bags last time.