I once heard a truism that projects slip by the units in which they're measured. If the due date is in weeks, it will slip by weeks. Months, months. Etc. I thin

I once heard a truism that projects slip by the units in which they're measured. If the due date is in weeks, it will slip by weeks. Months, months. Etc. I think HSR is being measured in years, Tesla seems to be less (I don't follow them). Point being: "slipping" by itself does not necessarily set up an apples to apples basis between different kinds of projects.