I have searched some stuff like this before although I did not make the purchase because I mounted a lap top tray to my window and it can be retracted if I don't want to work while I am on the bike.
I saw a really good model from fitdesk.net and it should be the one that you are looking for. I found there site when I googled lap top on a bike exercise.
I saw a really good model from fitdesk.net and it should be the one that you are looking for. I found there site when I googled lap top on a bike exercise.