One nuance picked up by Polish media - the car had Polish license plates. It's a scam disguised as an investment. Well off people get legit car lease for a high end car, then are baited to "rent it" abroad for a monthly payment. Sometimes receive multiple months upfront payment. Then car "vanishes", while of course physically driving with original license plates on the French roads, and the payments stop. Basically car version of "buy an apartment with a mortgage and rent it, the tenant will pay your mortgage, after X years you have an apartment for free". The victims are people who are even more greedy than well off. The 17 years old was likely linked to drug dealing and to financial scam, driving recklessly and running away from police.