I'm actually not a cyclist myself, but posted Backtracker here for two reasons:
1) It's a great-looking product from a South African company & team. So I have a natural bias there. :)
2) I love it when smart devices solve *real* problems and - in this sense - personal safety is as real as it comes. I know that there's just way too many accidents on our roads involving cyclists and hopefully innovations like Backtracker can reduce that.
CM Commerce