'300' does not automatically mean ICE. It is already a long time that numbers are not equivalent to displacement, but rather power/price hierarchy the powertrains. Look at Audi's new nomenclature where numbers range from 30 to 70 and represent approximate power according to a certain scale. With a more probable future where cars will be ICE, HEV, PHEV, REXEV, BEV and HFCEV, abstract numbers do make sense for customers not to get lost with a wide variety of technically different powertrains. Overall most customers look at power numbers and options, if money is available, they will tend to get the highest/latest number, without really understanding what those numbers represent. Good to see 'e' will be the top version of UX, should their be no UX-F.