Wackiest Japanese Inventions You Have To See to Believe 12. Taxi Walker This device not only tells you about the calories you burned while walking, but also the estimated taxi fare you saved from not opting to just hail a cab. Prev Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41