He’s actually right about this one despite the down votes. Hydrogen fuel cell vehicles are electric vehicles that use elective motors not engines so there are no oil changes.
The difference is that a fuel cell vehicle captures electrons during the reaction that takes place when hydrogen is exposed to oxygen (they bond to from H2O) rather than storing energy in batteries.
So battery electric vehicles store their energy in a battery while fuel cell electric vehicles store it in the form of hydrogen but ultimately electricity is was powers both of them.
The general advice goes like this; If your work offers a match on a 401k then contribute up to the match. If you have more money, max out an IRA. If you have more money, max out the 401k.
If your health plan is a high deductible plan with an HSA you can also contribute to this. They are designed for health expenses but they can also serve as an additional tax advantaged retirement account.
Beyond that you’d be investing through a taxable brokerage account.
As far as what to invest in, S&P500 index funds are usually advised since they tend to capture the overall average returns of the market. Target retirement funds are another option if you want a set it and forget it option that will rebalance to less risky investments as you near retirement age.