SVG+ Javascript + firefox = cool

Past few days, I have been using Mozilla 1.5. I have to say that there is a lot improvements in the browser. The one thing i was looking forward to was SVG. It seems there is a chance svg + javascripting may become a light weight alternative flash.. however, the the pc cpu usage with scripted svg becomes really unweildy. i tested it by trying canvascape. A walk around similiar to doom. The canvas scape took 70 percent cpu usage when running around the maze. i wonder what would happen if svg + javascript+ ajax was used in a application..