Well, it's not a real survey, just really corious. I've only raced Rally by car, but recently contemplated to start on a few friendly events on my motorcycle too. Looking at roadbooks I'm amazed by their pricetag, weight and texhnology what looks at least 70 years old. I had an idea of creating a modern day Roadbook based on e-ink technology. Consumes almost no power, readable in direct sunlight and during the night just as paper, has no moving parts, weights easily 1/4 th of the current models and electronics and installation could be a lot simpler. It'd be easy to upload the information after edited on a phone or tablet through Bluetooth. I haven't seen such roadbooks so far, so if they exist, please bear with me. If they don't, would you be intersted in buying one - given they would be compwririve in price with the existing solutions?