I see it similar, bitcoin goes up, altcoins prices stutter for a second but then they all go up as well and catch up with bitcoins increase. That doesn't mean that we should not be hoping for altcoins to drop, that just means that we should not be worried about bitcoin going up and altcoins going down.
Nice car example you use but I guess the correlations are always changing with every new cycle and every new situation:)
I think altcoins dropping is a natural part of the rally cycle, just I would never expect them to improve FOR SURE when Bitcoin rallies. Just look at what happened to 95% of alts in 2017/2018. They never recovered even when Bitcoin eventually did.