Normally in my diagnostics drawer (with a lot of special car interface devices..) But when travelling (say more than 400 miles from home) it goes in my tailbag, and my Netbook goes in the saddlebag. I've never had to use the GS911 on my bike.. (knocking on wood..) I have checked other people's bikes with it. The Netbook comes along for email and web-browsing, trip planning anyway.