Normally you don't need a GPS... but when ye poodling around a town in north Queensland, for 30 minutes in 38degree heat, trying to find a street/motel the local gas station hasn't heard of (and its not on the map) and your patentience with ridding partners is starting to fray... the little GPS comes in handy.

When touring I find a GPS useful mostly to confirm next leg distance to gas stations etc or if there is any if I take a scenic detour and to find motel/hotels that aren't on the main road of a town/city.

On the downside - they often get a little lost, most due to road changes that you haven't PAID for the lastest map download of, and no matter what voice you select you will get really sick of hearing "Turn left 2.5km on unpronounable st" counting down... and continue to if you flick past the said turn off. Turn the volume off and you end up having to watch TV whilst riding.

Last two trips we took the car GPS for said reasons, but it only got pulled out and turned on when needed (Find closest Red Rooster, Find closet Resaurant etc)

That said without the power connection to your bike the Tom Tom Urban Rider is little better than a car GPS strapped to your handle bars.