Is it feasible to make a good EV engine sound generation with MAX / RNBO?

I’m a software engineer who is new to Max and audio, but I’m looking for a way to create custom interior and exterior driving sound for a couple of EVs I have. I’ll be using raspberry pi and my custom made hardware that currently gets literally any data from the electric motor in my the car (rpms, speed, throttle, power in kw, recuperation and a dozen of other metrics). I haven’t measured data delay and latency, but I believe I can pull data pretty fast if needed.

I’ve heard that Shepard tone and granular synthesis should be used to achieve this, but after asking my friend audio engineer to make a PoC in RNBO, I wonder if instruments in RNBO can pull of sounds like in major EV producers (Hyundai, Mercedes, GM, Porsche). I love how taycan and cayenne sound when you drive these seemingly “boring” EVs, but so far we were not able to pull off a good sounding rnbo patch with recorded CAN data from real car - basic versions sounded ok but very synthetic, more complex ones with Shepard, poly, gran synth sound bad so far, very far from what I’d like to achieve. It’s worth noting that my friend has experience with max but he is new to RNBO, after our trials and errors he also wonders if it’s possible to achieve within RNBO.

Does anyone know if it’s feasible to do it or should I just give up because of some restrictions RNBO has? Maybe someone saw people or companies using RNBO for the same purpose?

Are there any prominent people in the community who can I reach out to for advice, assistance, or evaluation? I’m willing to invest resources to get it working, but it’s been hard to find knowledgeable audio engineers