
The Highcroft team has focused on chassis development while the Fernandez team with the proven Lola chassis has been the primary engine development team. Andretti-Green gets all the benefits of the other two. The result of all this work was that the Acura won the LMP2 class at the Sebring opener and has run competitively all year long.

For 2008, Acura is planning a major revision of the Acura chassis targeted at further performance improvements and more importantly the serviceability of the car. The current car is difficult to repair during a race and that needs to be improved, especially for longer races.
Over on the IRL side, Honda is currently the sole supplier of engines since Toyota and GM dropped out at the end of the 2005 season. One aspect of the lack of competition is that Honda doesn't have to stress their engines to the limit. In spite of the cars being as fast as ever, they haven't had a single in-race engine failure in 2007. The current engine is a 3.5L V-8 that runs on 100 percent ethanol.
[Source] Autoblog.com
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