If you want to test this idea out with a charter before committing to a private railcar all your own, there are available.

Source: https://www.vanityfair.com/style/2023/04/the-super-rich-have-found-a-new-way-to-skip-the-tsa-buying-private-train-cars

Investigators are focusing on CTA rail signals, railcar brakes and track conditions that caused the wheels to slip at other points in the route before the crash.

Source: https://chicago.suntimes.com/2023/12/12/23990941/cta-yellow-line-crash-preliminary-report-ntsb

They offer a wide range of railcars, railcar components, and leasing services.

Source: https://seekingalpha.com/article/4608406-trinity-industries-stock-ramping-up-growing-margins-buy?source=feed_all_articles

TRN's railcar leasing segment is highly profitable, with lease fleet utilization at 98.2% and increasing margins, while the rail products segment sees a 62% YoY revenue increase.

Source: https://seekingalpha.com/article/4608406-trinity-industries-stock-ramping-up-growing-margins-buy?source=feed_all_articles