 It might be cheaper to actually take a throwback taxi home after a night out than using rideshare. Yeah, if you want to save a little bit on cash, no one to use which. Traveling during rush hour? Taxi. Going to the airport? Definitely take rideshare. If you want to go and take a ride with me, better roll down your windows to stay cool. Turns out your mom was right. Unless you're driving on a highway, windows down saves you on gas versus AC. Drive the speed limit. Increasing your speed 20 miles over the speed limit in a compact car can be like driving an SUV as far as how much gas you're using.