wnybubba from Bflo-Roc on 02/20/2021 09:56 PM:
Interesting question, but let me frame the situation for you.
First, LaSalle Park is going to be going through a major re-shape, re-imagine and re-work that has received some major funding. The Olmsted Park might be in a significant construction phase and not be a viable option. Even without the construction, it would not be a likely candidate for long-term or even overnight parking.
Secondly, I'm assuming you are traveling to Albany (or places east) with plans on boarding a train and biking back to Buffalo. To the best of my knowledge (search Amtrak on the forum), bike loading is only available at the Depew (suburban Bflo) station.
I'm pretty sure leaving a vehicle at Depew is an option. The station is quite isolated from the surrounding area and there is ample parking available. To be safe, however, I would make a call to be sure your plans are in place. If there was an issue there... option for leaving a car would be asking permission at a nearby hotel (there are many, and I've never been turned down before). There is also a Park & Ride at the NYS Thruway exit 49 (Rt 78, Transit Road) not too far north of the Amtrak Depew station.