Because of absence of traffic jams during lockdown, fuel economy of my '17 GT86 improved significantly. My daily commuting distance is about 31 miles, which used to cost me about a gallon each working day. Over the past two months this dropped to almost 40 mpg. That's a decrease of 22.5%. Also the fuel prices dropped significantly, so there's extra money in the pocket. It can't be spent, however, as the pubs are closed.