A GPS that encourages meandering won't be the dish of the day (month, or year) for hypermilers, but might do well in the slightly more genteel world of cycling. Pioneer's PotterNavi sits on the handlebars of your velocipede and can let you decide between straight or scenic routes. The 100 gram device packs a 2.4-inch 240 x 320 LCD screen and fortunate Japanese buyers get two years of 3G data for free, courtesy of benevolent overlords NTT DoCoMo. Button-free navigation is possible with the included accel
