Sep.20 (GMM) F1's two Red Bull-backed teams at the Jerez test have became the latest to follow the trend started by McLaren this year in trialling a 'bridge'-esque front wing.



Red Bull and Toro Rosso, whose cars are similarly overseen by the company Red Bull Technology, both ran with the conspicuous innovation while on Wednesday testing during the last in-season session of 2007.



Williams had been the first to emulate the McLaren design recently at Monza, although interestingly the Grove based team was not using the same wing at Jerez.



Honda has similarly run with and without its new bridge-style wing this week.



BMW-Sauber, meanwhile, is unlikely to follow suit any time soon, with Mario Theissen revealing that - with second place in the constructors' championship now all but guaranteed - development of its 2007 car has ceased completely.



"The development work on the BMW Sauber F1.07 has ended," the German confirmed.