TBH I share Fax's sentiment on mansells past, good driver but marred by a huge chip on his shoulder.
However I do think he has maybe changed, according to those that where there is performance at the drivers parade hinted at a more relaxed Nigel.
As for driving at Le Mans, maybe he did underestimate it, was that because he was 'sold' on the deal by the team owners who had their own agenda, it cant have hurt thier bank balance to have mansell on board?
I dont see anything wrong in someone setting up deal to race with his 2 sons, who may or may not be anygood. Given the right situation, I would like to think I would be the first person to enter a team codriven by my twin daughters, I doubt we would win, but i would have fun trying.
I hope he does not give up on the project, as it represents a good deal for his sons, who by all accounts seem to have topped out ability wise, after all McNish, TK, Biela, Lehto etc never set the world alight in F1 one but have done okish at other levels!