Honda said on Monday that it will enter a battery-electric concept car into this year’s Pike’s Peak Hill Climb, a fiercely contested event in which racers compete for the fastest time up a steep and winding mountain road in Colorado. The Acura EV Concept, as the car is called, is based on the hybrid Acura NSX supercar and builds on technology that Honda used in another experimental race car at last year’s event. It’s a strong hint that Honda may be planning its own entry into the upscale battery-electric car market currently dominated by Tesla Motors.