A little research on the 1:64 scale cars that came with the Lionel Auto Carrier With Six Die-Cast Cars 6-16208.

Three of the cars are 1986 Buick Grand Nationals (the other three are Corvettes.)
All six were made by M.C. Toys in Macau.
M.C. Toy is an acronym for "May Cheong Toy Company," a Hong Kong toy company founded in 1967 by brothers P.Y. Ngan and Y.C. Ngan. The company initially sold its products under the M.C. Toy brand, which used the initials of the company name. Around 1990, the company began using the name Maisto for its products, and the M.C. Toy brand was eventually discontinued.
Reference:
https://en.wikipedia.org/wiki/MaistoHealey36's Lledo ambulance model may have a slight connection to Macau.
Hong Kong and Macau are located at the east and west sides of the Pearl River Delta respectively, with a close distance of about 64 kilometres (40 mi) in between. On the other hand, Hong Kong is Macau's largest export destination.
Lledo was a British manufacturing company founded in 1982 by Matchbox co-founder Jack Odell, and Burt Russell, and based in Enfield. The factory produced mainly die-cast scale model commercial vehicles, and also cars, from 1983 to 1999, when the company went into bankruptcy.
"Lledo" was a reversal of Odell's own surname, a mnemonic device from war days in the African desert so as not to forget his wireless call sign.
Lledo set out to specialize in replicating early Matchbox series styles, particularly the Models of Yesteryear range. Odell and Russell bought machinery from the Universal company, which had purchased the Matchbox plant and shipped it to Macau. The tooling they purchased was re-shipped back to Enfield, England where in April 1983 the new "Days Gone" range was launched. The name is a nice continuation of Matchbox's nostalgic "Yesteryear" theme. Models were later made in China.
Where in China? Macau is a special administrative region of China, which maintains separate governing and economic systems from those of mainland China. Was it Macau?
Reference:
https://en.wikipedia.org/wiki/Lledohttps://en.wikipedia.org/wiki/Hong_Kong ... _relations