I took this one today. I spotted the scene as I was driving along and nearly caused a pile up as I screeched to a halt to jump out and take a pic!
I used warm up an ND filters to add a bit of colour and keep cloud detail. In PS I've added a layer to lighten the foreground and burnt in the sky a tiny bit. I don't know though - I'm still not entirely happy with it and I can't put my finger on the reason. It might be the colours but I think I've been staring at it too long now to be objective! Maybe some of you kind folk could tell me what you think?