Story Maps

I'm loving, really loving, the idea of this story, The 21 Steps by Charles Cumming, and how you can use the internet to visualise the plot. The story is told caption-form above aerial shots of London. But is it just me or did it make anyone else feel sick? I haven't managed to get to the end yet. It's not the content, it's the sensation - like reading a book in the car. I could never do that either.