Can anyone provide specific techniques and/or products that worked to remove Amtrak's touch? Specifically, I need to remove adhesive stripes from the window band and platinum mist paint from roof/ ends of a Budd stainless steel car.

No no NO!

Disregard everything else suggested here unless you want to severely damage the windowband and letterboards of the the car!

Jasco gel Paint Stripper, or "aircraft stripper" as it's known in larger quantities will do the job you desire - and with much less effort than outlined above.

I've removed Amtrak markings from over a dozen Budd cars using this method - work smarter, not harder!

Just a reminder that "Aircraft Remover" or other strippers with Methylene Chloride can be very toxic.

From Wikipedia:

DCM (Methylene Chloride)... is not without health risks, as its high volatility makes it an acute inhalation hazard. It can also be absorbed through the skin.

Symptoms of acute overexposure to dichloromethane via inhalation include difficulty concentrating, dizziness, fatigue, nausea, headaches, numbness, weakness, and irritation of the upper respiratory tract and eyes. More severe consequences can include suffocation, loss of consciousness, coma, and death.

DCM is also metabolized by the body to carbon monoxide potentially leading to carbon monoxide poisoning. Acute exposure by inhalation has resulted in optic neuropathy and hepatitis. Prolonged skin contact can result in DCM dissolving some of the fatty tissues in skin, resulting in skin irritation or chemical burns.

It may be carcinogenic, as it has been linked to cancer of the lungs, liver, and pancreas in laboratory animals. Other animal studies showed breast cancer and salivary gland cancer. Research is not yet clear as to what levels may be carcinogenic. DCM crosses the placenta. Fetal toxicity in women who are exposed to it during pregnancy, however, has not been proven. In animal experiments, it was fetotoxic at doses that were maternally toxic but no teratogenic effects were seen.

In people with pre-existing heart problems, exposure to DCM can cause abnormal heart rhythms and/or heart attacks, sometimes without any other symptoms of overexposure. People with existing liver, nervous system, or skin problems may worsen after exposure to methylene chloride.

Use appropriate safety equipment when using it!

(As an aside, I had a difficult time finding a small can of it for an automotive project. Apparently its sale is restricted in Utah. After finding and purchasing one from a local jobber and reading about its toxicity, I returned it and found another option.)