The line graph depicts information about production time per a vehicle by four different USA brands in 4 years, commencing in 1998.
Overview, time spending on manufacturing was dropped in all US-based car producers.
In 1998, Nissan hit the highest at around 37 hours per vehicle, followed by DC at approximately 34 hours to invent a car. While the created-hour for a transportation in Nissan dramatically decreased, the tendency in DC climbed down gradually by nearly 6 hours to 2002.
Meanwhile Ford bottomed at around 25 hours to produce a commuting vehicle in 1998, GM used 32 hours to create a car in the same period of time. Hours per vehicle in GM went down slightly without any noticeable fluctuation. In contrast, Ford had a little oscillation since the pattern increased stably by 3 hours from 1998 to 2001 ,but then it decreased at approximately 26 hours in 2002.
