I guess it's expected since this is the last chapter, but man, things are compressed. Hikari is not making a great impression.
I feel like if someone barely knows things about cars, asking for a Lamborghini is a terrible idea...well, at least the consequences occurred, but I feel like the big brother would have realistically said, "you wouldn't be able to drive it". How many times would she have stalled out?
Also, the artist really didn't know how to draw a Lamborghini. It looks different in every panel. Edit: I'm pretty sure it's supposed to be a Murcielago, but the rear windows are drawn pretty weird.