Power-to-weight ratio

Columns: Vehicle | Power | Vehicle Weight | Power to Weight ratio
Benz Patent Motorwagen 954 cc 1886 | 560 W / 0.75 bhp | 265 kg / 584 lb | 2.1 W/kg / 779 lb/hp | Stephenson 's Rocket 0-2-2 steam locomotive with tender 1829 | 15 kW / 20 bhp | 4,320 kg / 9524 lb | 3.5 W/kg / 476 lb/hp | CBQ Zephyr streamliner diesel locomotive with railcars 1934 | 492 kW / 660 bhp | 94 t / 208,000 lb | 5.21 W/kg / 315 lb/hp | Alberto Contador 's Verbier climb 2009 Tour de France on Specialized bike | 420 W / 0.56 bhp | 62 kg / 137 lb | 6.7 W/kg / 245 lb/hp | Force Motors Minidor Diesel 499 cc auto rickshaw | 6.6 kW / 8.8 bhp | 700 kg / 1543 lb | 9 W/kg / 175 lb/hp | PRR Q2 4-4-6-4 steam locomotive with tender 1944 | 5,956 kW / 7,987 bhp | 475.9 t / 1,049,100 lb | 12.5 W/kg / 131 lb/hp | Mercedes-Benz Citaro O530BZ H 2 fuel cell bus 2002 | 205 kW / 275 bhp | 14,500 kg / 32,000 lb | 14.1 W/kg / 116 lb/hp

Example questions:
What years did the company produce the automobile with the power to weight ratio of 42 W/kg / 39 lb/hp ? | What competition did the steam locomotive with a power to weight ratio of 3.5 W/kg / 476 lb/hp win in October 1829 ? | What company produced the range of pickup trucks with a power to weight ratio of 25 W/kg / 66 lb/hp ? | What year was the machine built that has a power to weight ratio of 2.1 W/kg / 779 lb/hp ?

Answers:
1983 to 1988 | Rainhill Trials | Navistar International | 1885