Make sure the pants are of a durable fabric that will wear well when riding bikes. Transportation Argentina has an excellent bus system to all parts of the country. All but the smallest towns also have good local bus service. Missionaries usually travel by bus to zone conferences and on transfers. Some even have waitresses in first class, and all show movies which can be distracting at times.
Buses are a good place to make contacts and discuss missionary work.
Only those at the Mission Offices use cars. There are excellent shoe repair services available at a reasonable cost. Some American shoes are made of plastics, and cannot be repaired. Break the shoes in well before arriving, if possible. Many areas of the mission are very hilly.