Yes, he knows where the doughnut shops are. No, he won't tell you to drive on the wrong side of the road.
And, yes, by the end of a long motorway trip you'll never want to watch The Simpsons ever again.
That's 'fun' as in 'painfully annoying'
According to the press release, "Homer's humorous, encouraging and sometimes unusual advice will guarantee that drivers will not only reach their destination on time, but have a lot of fun along the way."
That fun takes the form of such directions as "Take the third right. We might find an ice cream truck! Mmm… ice cream," plenty of girlish giggling and the odd "Woo-hoo!"
Voiced by Dan Castellaneta, the Homer download costs £7.95 and should work with all recent TomTom GPS sat navs. More info and voice samples at www.tomtom.com/page/simpsons.