I agree that you need some kind of desk type thingie to put it on. I think it can be done, but I'd sit in the backseat so my quilting fabric and all my gadgets could be next to me on the other passenger seat. If you could use a pulley type of thing to hold the front of the desk up, like hang something like a bungie cord over the headrest of the front seat to keep it up off your legs and the desk against you have legs that sit on both sides of you so no part of the desk is laying in your lap, otherwise you'll get sore legs holding the machine up. But I think it can be done if you can find the right machine. Sounds like something I'd try and do. Ha ha. But I think you have a good idea if it's on the freeway or a highway that isn't bumpy. Just make sure your hubby drives slow.