This concept car from Peugeot uses a V12 diesel engine which Peugeot plans to race in the 2007 24 hours of Le Mans. If the engine wins in Le Mans, it will immediately legitimize the 908 RC concept and hopefully for Peugeot to manufacture it.
Hayden Panettiere's tattoo is fully visible in these pictures from Cannes. What we can see is an Italian phrase, "Vivere senza rimipianti". This translates to, "to live without regrets." Unfortunately "regrets" in Italian is "rimpianti."
So it looks like Hayden has at least one regret...
Hayden Panettiere Tattoo "Vivere senza rimipianti"(sic)