Team Penske Acuras well clear in final Road America practice session

Dane Cameron has set the fastest time in the third and final free practice session ahead of tomorrow's IMSA round at Road America. Cameron's 01:49:590 was some two-tenths clear of team-mate Helio Castroneves in the other Acura.

The pair of Acuras remain the car to beat so far this weekend, with the Mazda of Oliver Jarvis third, well over half a second behind. Colin Braun was fourth, a full second behind in the CORE Autosport Nissan DPi ahead of the second Mazda of Jonathan Bomarito.

Pipo Derani set the quickest Cadillac time, some 1.2s off the fastest time in the #31 Whelen Engineering machine ahead of Renger van der Zande's Wayne Taylor Racing Cadillac.

A late charge from Laurens Vanthoor put him fastest in GTLM for Porsche, just 0.004s quicker than John Edwards' BMW M8 GTE, with the sister car behind in third.

The two Fords of Ryan Briscoe and Dirk Müller were fourth and fifth, ahead of the #4 Corvette of Oliver Gavin, with the class rounded out by the second Porsche and second Corvette.

The #33 Riley Motorsports Mercedes-AMG GT3 was fastest in the hands of Ben Keating, with Paul Holton second in Compass Racing's McLaren 720S GT3, while Robbie Foley was third in the Turner Motorsports BMW M6 GT3. Lime Rock winner Dennis Olsen was fourth for Wright Motorsports.