Savings plan for junior best practice

Hello everyone, I have recently become a father and would like to save for my son in the long term. I already have a portfolio with Finanz Zero and have been saving for an MSCI World ETF from iShares for some time. Now I discovered the JuniorDepot at comdirect. My plan: pay €100 a month into an ETF savings plan for 18 years. I would like to use the capital I have saved to finance his driver's license and his first car when he turns 16, and later possibly training, studying or his first apartment