Energy efficiency I was referring to. Which it is. With regards to time efficiency - it depends on the journey you're making and at what time. Cycling through a busy conurbation at rush hour? Your advantage is generally on two wheels. When I lived in was travelling 10 miles into Manchester city centre every day, it was quicker pedalling in than it was getting the car or public transport. It's quicker for me to get home from central Stockport to Heaton Mersey by bike than by car as well. Due entirely to other cars on the road.