i was able to install 08 onto my mp3 player and play it no problems on any comp, but as was said above don't know how the activation certificates work for 10.
I think if you put steam on to the USB drive and activate FM10 through steam it should work, as the activation will be linked to your steam account. I've done that with other games through steam and its worked fine. Didnt try it with FM though.
I went and found out some more about it. I was told then sure I can install it on the 8gb usb drive but most likely wont be able to play it because the cache on the usb drive isnt high enough and also in regards to the video related things with the game on the usb drive, just isn't good enough. Is this true ?
I was only going to use it on the usb key so my computer is faster when i use it for other things.