The cars of today have different maintenance needs than the cars of the past. The cars of the future may have different needs entirely. No matter what, cars will need mechanics that know how to properly maintain and repair them. The young adults of today will be the job force of tomorrow, so choosing a career that will best fit with the needs of the changing world will be important to job satisfaction and a successful life. With the vast array of career and job options, it will also be important for young adults to understand which work will be the best match for their interests, talents, goals, and personality types. Certain careers are expected to gain importance within the early decades of the twenty-first century. In general, the number of job opportunities for mechanics is expected to increase slower than the average for all occupations. However, job opportunities are expected to be very good for mechanics that complete a training program and receive special certification to work on alternative fuel vehicles.There are already millions of alternative fuel vehicles driving on the roads today. As this number grows, the world will need more mechanics who know how to work on this new generation of "green" vehicles. Could you be one of them?