The graph presents information about how much time (in hours) it takes for four car manufacturers in the US to produce a vehicle between the years 1998 and 2002.
Overall, all the manufacturers faced a downward trend towards the end of the period examined. Notably, Nissan went through the most dramatic decrease.
Looking at more stable trends, they belonged to DC and Ford. First, DC started at 34 hours, while Ford was at 25 in 1998. The next year, DC decreased to around 31 and remained unchanged until 2001. In contrast, Ford continued to increase gradually, reaching 27 in 2001. However, in the last year, DC declined to approximately 28, and Ford to 26, narrowing the gap between them.
Nissan, which started at the peak of 37 hours, reduced its manufacturing time consistently. In 2000, figures for Nissan decreased to 24 and continued their downward trend to around 21 hours, marking the lowest point on the entire line graph. When it comes to GM, it showed a similar pattern to Nissan. In the first year, GM was ranked as the second-fastest vehicle producer. It then experienced a steady decline until the final year (25 hours), securing second place.