Should I trust Google Maps Speedometer?

I am an educated man with 2 professional degrees in healthcare and 62. I grew up in Dearborn Michigan and loved working on cars, brake jobs, bodywork, painting, cams even rebuilt a Alfa Romeo V6 engine and it actually ran. Never any formal training like you guys just a love of cars. If I had a longer time on this planet I would add to that list automotive designer, sculpture, welding, metal fabrication artist. My favorite car, the Delahaye. Delahaye was a family-owned automobile manufacturing company, founded by Émile Delahaye in 1894 in Tours, France.

I love learning, and you guys on this forum are the top of the crop!