http://www.pescarolo.com/news.asp?news=188 has a short report about the test day. The Pescarolo 03 suffered some teething problems: the heavy vibrations of the Judd V8 caused the rupture of a mechanic component twice, which lead to some downtime for the repairs. No big surprise because the Pescarolo 03 is brand new.
On Tuesday Pescarolo will do another test at the Bugatti circuit with both cars.