i find when driving on a road if i glance down and see 100km/h generally if i stay at the same rev means it means have not sped up.. Funnily enough this technique works at all speeds on all other roads
Typically if i glance down and then accelerate i generally assume i have sped up
If I brake I assume I have slowed down
Crazy i know
Lol
my race car doesn’t have a Speedo..... I wonder if the above technique works on that one as well?