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There's also the Lola-Drayson B12/69EV from Drayson Racing. If this is within spec for the ALMS/IMSA/Quimera series, they could run it there. The plan is, however, to use it as a development platform for their next vehicle which they will campaign in FIA Formula E, as well as supplying it for other teams.
I read it will also do a demonstration lap at this year's Le Mans. Should be interesting if the organisers let it go flat out and not the anaemic safety car led parades we saw previously.