The extension of the lifespan of the GTP category in the IMSA SportsCar Championship could pave the way for new manufacturers to join, series boss John Doonan believes.
Doonan reiterated IMSA’s position that there is interest from major car makers to join the top class of the series in the wake of the announcement ahead of this month’s Le Mans 24 Hours that the LMDh and Le Mans Hypercar rulesets were being expanded through to the end of 2029 in both North America and the World Endurance Championship.
