Haha great idea , I'm sick of placing my coffee on the passenger seat and rapping my sweater around the cup so it doesn't tip , I wouldn't mind one actually

Hi Lumix,
 
Got mine today and a double thumbs up from me.  Like the others I'm really impressed with the finish and fitment.  I was concerned that it would slip but the rubber seems to hold it in place really well.  I'll give it a go with a cold beverage (not beer) this weekend.
 
I take it you made these yourself?  If you did, top marks!  
 
Cheers
Col

Thanks Col! Designed and made by myself. I have been using it for $1 frozen cokes, can't get enough of them in this hot weather.