As long as you're in town, the density of stop signs/lights is relatively constant, whether you're going 0.3 miles or 3 miles, so your hoped for "less efficient driving" is a fantasy you cooked up to try to save your argument.
The difference between city and highway mileage isn't enough to save your argument either.
You tried to argue that someone can save a significant amount of their gas usage by using bikes for short trips. That's wrong because those trips are a small fraction of their gas use.
It's wrong no matter even if their car uses 1Bgallons per mile. (Ratios and percentages are like that.)
The difference between city and highway mileage isn't enough to save your argument either.
You tried to argue that someone can save a significant amount of their gas usage by using bikes for short trips. That's wrong because those trips are a small fraction of their gas use.
It's wrong no matter even if their car uses 1Bgallons per mile. (Ratios and percentages are like that.)