The key thing most track groups are looking for (except BMWCCA) is a rollbar with "substantial rearward bracing" -- which the Elise has. Show them a photo of the chassis with integral rollbar. They don't want full convertibles with "cosmetic" rollbars which don't offer any real rollover protection. Targa style cars such as Corvettes, Porsches, NSX-T's, etc. are not given a hard time at most track events.