Interesting how people interpret the word faster differently.

To you, 2x faster means 2x the work done in the same time, but 25% faster means 1.33x the work done in the same time.

I see this a lot - in software people interpret 50% faster as a 50% reduction in time taken.

If a car is 50% faster, I hope people would universally interpret that as e.g. 20 to 30 mph. But if I asked people how long would a 1 hour journey take if it were 50% faster, I bet a lot would say 30 mins, because it kind of seems like that's what I mean.