I have a bad feeling about this one, hope I'm wrong but I can see this being a massive disappointment.
TDU1 was awesome back in the day, I put a lot of hours into that. The Forza Horizon games are decent and satisfy the open world driving game itch that I want, but they've never really managed to capture the magic of TDU. They had a certain sense of freedom whereby you never felt pressured to complete everything, do events you didn't like or even the need to have every car or unlockable. It was played at your own pace, with your own goals and desires, when you finally saved enough for a new car it meant something.
I remember the first time I played, I got the first house and car and pretty much went exploring the map for hours, I don't think I even attempted a race for a couple of days. That feeling of driving for what felt like ages, only to check your map and see that you've moved maybe 20% the length of the map, with all the roads you just passed leading off to other places as well.