My thoughts.....
1. You can certainly do a multi-animation project - but forget about the LM3914. It's going to be a microcontroller or an insane amount of discrete electronics (that nobody here would even contemplate).
2. I would never suggest implementing such a diverse range of animations for a real vehicle used on public roads. These lights are for communication to other drivers and several of those animations serve no real purpose - unless, perhaps, it's advertising how geeky you are. If you want to do this for concourse displays or on the back of a monster truck inside an arena, then fine - but on the roads, it is very likely to cause confusion and will, without any doubt, cause distraction. Distractions cause accidents.
3. In implementing the 20x100 LED sheet we will need to know the connections it has in order to design the circuitry around it and define a programming approach.
4. We are all interested in seeing the OP achieve success, but this latest project is far more involved than the original single strip. With the single strip, building the circuit with 10 discrete LEDs and writing a short program would be easy, but the LED sheet is going to require more resources in designing, building and programming. I, personally, have not done much in the way of matrix display programming, so I'm sure that anything I put together would be clumsy ... and my time demands mean any assistance would stretch out. As a result, I'm not immediately putting my hand up - but that doesn't mean I don't want to help. It just means I don't want to make things worse.
My thought was that the original 10 LED sequencer would be an excellent entry level project, introducing the OP to, say, Arduino - and then assisting him along the way as he explores more and more of the capabilities of today's exceptionally affordable electronics.
I still think this is a good idea.