There are no passenger train connections between Mexico and the United States; there are however, important freight train connections. Depending on the port-of-entry and route within Mexico, cargo can take between 4 and 48 hours to reach its final destination.
Most likely smog. Mexico City has a worse smog problem than Los Angeles ever had.
They train a couple of days each week
3 days..roughly 70 hrs.
For only 122 days, at the city of Cuernavaca, 59 Km (37 mi) south of Mexico City.
Cancun is such city. It is a fact that on average, it has more than 240 days of sunshine per year.
it would take about three days for a letter to travel to Mexico from new york if it was travailing three hundred miles an hour.
None. Mexico City is below the snow line; its average annual temperature is 16 ºC (60.8 ºF).The last snowfall recorded in Mexico City happened on January 11, 1967; it was a 5 cm (2 in) snowfall.
Of course; not all days are sunny even in Mexico. On summer months it is usual to have thunderstorms and even hailstorms.
12 days and 7 hours according to google maps walking routes
According to the latest figures, unemployment in Mexico City reached 6.07% of the working population during the early days of September, 2013.
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Mexico City forms part and is capital of present-day Mexico. Its government is that of a federal district - such as Washington DC is to America - and its main difference from the days of the Aztec Empire is that when it was Tenochtitlan, it was a pre-industrial city, capital of the Aztec Empire.