A bar chart titled "Deaths from Wars & Cars" the Leftmost bar is WW2 at 78M, followed by Cars 72M, Mongols 39M, Taiping 25M, Ming Qing 25M, 2nd CN-JP 20M, and finally WW1 19M. A note at the bottom states "Showing estimate midpoints"
Why? This isn't making the statement cars cause more deaths than all wars, it's saying it causes more deaths than specific wars. When people say Spanish flu caused more deaths than WWI or that COVID was killing more people a day than 9/11 you don't turn that on it's head and demand you compare the flu to all wars or COVID to all terrorist attacks. It's just a metric to show the human cost of things, which makes a lot of sense to people who live in a market economy who want to put a price on everything. You can't compare apples and oranges, you can compare the cost of apples and oranges though.