Friendly fire is nothing new in motorsport, but rarely has it been so hilariously blatant.This time it was Formula E with two former Formula 1 prospects openly at war with the title race all-but over.Pascal Wehrlein appeared to let Antonio Felix da Costa past himFormula EBut then flew straight into him, punting him into the wallFormula EPorsche duo Pascal Wehrlein and Antonio Felix da Costa have had an unhealthily competitive relationship due to their status as former world champions, and it boiled over in Berlin.This wasn’t some edgy but avoidable first corner race tangle though, but a completely needless punt off the track in practice.The drivers were in different phases of their Friday runs when former Mercedes academy driver Wehrlein slowed up off the racing line, allowing Da Costa past.However, with the former Red Bull prospect ahead but not fast, Wehrlein accelerated straight into the back of him, sending Da Costa spinning into the wall with a written off car.The session was instantly red flagged and cameras switched to the team garages to pick up their reactions.With it clear Da Costa was okay, the incident then took a rather amusing turn with every other rival team principal unable to contain their laughter.If that wasn’t funny enough, the commentary team began cracking up, and then the comedy timing was perfected by a switch to the Porsche garage.Porsche head Florian Modlinger was sitting there completely stony faced, before the director cutting away to even more chuckling managers.As it turned out, Modlinger explained that the incident was a complete misunderstanding, with German Wehrlein readying for a flying lap, but driving so slowly and off line that Da Costa understandably deemed it safe to pass.Modlinger told The Race: “I told them already that it’s not acceptable to have contact in a free practice session between teammates. Rival team managers were in bitsBand SportsPorsche’s boss was lividBand SportsBand SportsBut that just made it funnier for everyone else[/caption]“Both were instructed of the programme of each other. It happened.“I do not expect that they are best friends. They do not need to share any room during a race weekend or go together to holiday.“They are race drivers, they are professionals and they have to comply with the team rules, which they did, until now, very professionally and delivered what we asked them.“But this contact is not acceptable.”Wehrlein, who has 39 F1 race starts to his name with Manor and Sauber, would go on to top the session, showing the toughness of FE cars around street tracks.He’d then finish second at one of two races in his home country, delaying an inevitable title win from Oliver Rowland who failed to finish.Wehrlein had the last laugh as he kept his faint title hopes aliveGettyWith a 50 point lead over Wehrlein in the championship with three races to go, Rowland can still wrap things up during race two in Berlin on Sunday, taking his first FE title from Wehrlein, last season’s champion.