Ridiculously awesome photo and time lapse of a stormcloud at twilight

I've been following photographer Jeffrey Sullivan on Google+ for a while now -- it's a great place to see the work of talented people, and that's where I found his lunar eclipse sequence I posted here last year. Jeff is really good, and gets amazing shots of the sky. But today he posted the best shot I've seen from him: this jaw-dropping composite photo of a cumulonimbus cloud spawning lightning below and with star trails above: