Complex sentence: Most trips are made by car, with transit and bicycles having a relatively low share of total trips; in a region of just over 2 million people, less than 80,000 trips are made with transit on an average day.
Split into simpler sentences: Most trips are made by car, with transit and bicycles having a relatively low share of total trips. In a region of just over 2 million people, less than 80,000 trips are made with transit on an average day.