Here's an approximate scale.
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-----------| "It's got some pep!"
-----------|--------------------
10 minutes-| Sportyish commuter
-----------|--------------------
-----------| Classic sportscar
-----------|--------------------
9 minutes--| Entry-level sport/'80s sportscar/sport compact
-----------|--------------------
-----------| Mid-level sport/sports sedans
-----------|--------------------
8 minutes--| High performance sport/faster sports sedans
-----------|--------------------
-----------| Supercars/really fast sportscars
-----------|--------------------
7 minutes--| Racecars/lightweight track cars
-----------|--------------------
-----------| Official lap record (6:25.91)
-----------|--------------------
6 minutes--|--------------------
-----------|--------------------
-----------|--------------------
-----------| BMW engineer estimate of BMW-Sauber F1.06 on an unrestricted run (5:15.8)
5 minutes--|--------------------
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