Band 6+: The chart below gives information on the amount of time taken to manufacture a vehicle by four US-based car producers between 1998 and 2002. Provide an overview of the information by identifying and describing the key details, and include comparisons where appropriate.

The line chart illustrates how much time to produce each vehicle by four different car companies in the USA from 1998 to 2002.

Overall, the vehicle production time of most car enterprises decreased over the period, while those to Ford witnessed a reverse trend. Additionally, the figure for Nisan showed the most significant downward trend.

Regarding decreasing categories, Nisan began the period at about 37 hours to manufacture a car before plummeting to around 23 hours in 2000. From this period outward, its figure showed a relatively lower dropping trend to reach at above 20 hours in the last year, overtaking other companies to become the most time-efficient car company in production. Furthermore, Daimler Chrystler car producer recorded a slight decrease during one-year period, from 34 hours to about 31 hours, then remained unchanged until 2001. This period also made this company have the longest production time despite a declining trend to about 29 hours in the final year. A same pattern was witnessed in General Motors firm as its figure fell gradually throughout the period, starting at 32 hours and finishing at above 24 hours.

Concerning the remaining company, only Ford experienced a remarkable growth over the period. Although its starting time was the smallest of others in 1998, at 25 hours, this turned to grow substantially in the following three years, prior to decreasing minimally to 26 hours at the end of the period.