@stumpy01 Mainly the reason for not hitting higher speeds on the bowl is because, as alluded to in the piece, corner constantly on a fairly significantly angled bowl scrubs considerable energy from the cars forward velocity.
Therefore, you’ll find that all cars lose a percentage of top speed on a bowl test track such as this or Millbrook.
Par for the course, and knowing the Imola track and the length of it’s pit straight before the first left hand corner, and having hit 200mph as a passenger several times in similar cars, I know that such cars can easily hit 200mph in less that 1.5 miles.