... why don't they just use the course, the finale of the Tour de Farce rides... okey... it would be a bit like bullriding to mannoever the F1 cars over the Champs Elysee, but definatly it would be interssting to see...
to be serious, when bernie wants to have a french grand prix near to the capital, LeMans would be the best solution... it's only 1 1/2 h away from Paris, and LeMans loves motorsport. They could extend the Bugatti circuit a bit to one of the permanent road racing course parts of the circuit de la sarthe or so, to make it more interesting.