Is money chasing investor propping up Tesla, perhaps spreading good news? (10)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

EV (Electric Vehicle, a Tesla is an EV ) + ANGEL (financial backer or investor, especially one who finances theatrical ventures) + IS + M (money, when referenced in M0, M1 etc [economic and monetary indices) – this being a down entry, the letters ANGELISM are propping up the letters EV