Question: How many rally car races are there in America?

Rally America



The Rally America National Championship is the national championship of rallying events in the United States. The inaugural season was in 2005. Rally America was also the name given to the organization that sanctioned the championship, was briefly rebranded to RallyCar in July 2010,[1] then reverted to Rally America the following year.
History
Rally America was founded in 2002 by  Rally Team owner Doug Havir, who provided scoring and reporting services to the Sports Car Club of America's ProRally Championship.  The two companies worked in tandem until the end of the 2004 season, when the SCCA withdrew its involvement in U.S. stage rallying.  The SCCA then made the decision to sell all commercial and sanctioning rights to Rally America.
In 2005, the inaugural Rally America National Championship was run, incorporating most of the events previously sanctioned by the SCCA.[2] In 2011, Vermont businessman Bill Fogg took over ownership of Rally America from Havir.[3]
Rallies associated with Rally America
Today the calendar is geographically compact with events concentrated in the Mid-West with championship events held across Minnesota, Michigan,  Missouri, Colorado and Wyoming, also travelling east to Ohio.

Champions

Event winners

Points
The points are awarded based on final position, as well as achieving a point for starting the race and one point for finishing the race. Thus, finishing a race will automatically earn the driver three points: one for starting, one for finishing, and one for coming in 10th+ place. 

Manufacturers
Rally America does not maintain manufacturer scoring or provide recognition for vehicle successes.  Most cars are selected by their drivers or teams with the vast majority being entered without any special involvement by their manufacturers.
Subaru
Subaru has been an integral part of Rally America from its inception.  At the time Rally America was begun, Subaru's Impreza, and in particular the WRX STi versions of the vehicle, had already become the most numerous competitive rally car in North America.  Subaru became a sponsor of the series and many prizes and other incentives were provided by the company both for rally in general, and Subaru driving teams in particular.  A fully stocked parts truck was dispatched to all national events, offering Subaru teams unique access to parts and expertise on scene. There are also discounts on parts for teams using Subaru Rally Team USA parts.[4]
Mitsubishi
Mitsubishi has been Subaru's primary competitor in North America, with its Evo series of cars. In the hands of competitive drivers, the Evo did prove a challenge to the larger quantity of WRXs, often edging into top three finishes.
Ford
Ford has had a long history in rallying item rallycross both worldwide and in North America. Ford made a unique appearance in American rallying at the 2009 X Games. Driven by Tanner Foust, Ken Block and Brian Deegan, three open-class Fiestas were dominant (two of the three claimed podium positions) throughout the weekend. Block, the eventual winner, praised the car, while Foust has said he would like to see a factory-backed Ford team competing regularly in Rally America.[5] For 2010, Ford announced that they would be sponsoring a Fiesta in Rally America and the X-Games.[6]
Volkswagen
While not often found contending for top overall spots they can be very good cars for those contesting the two-wheel-drive championships and for beginners. The Jetta, Golf and Beetle have all had many appearances and much success in Rally America events.
Scion
The Scion Rally xD debuted in the two-wheel-drive category at the 2010 Oregon Trail Rally with Christopher Duplessis at the wheel.  In 2011, Duplessis switched to a Ford, and the Scion xD was piloted by Andrew Comrie-Picard.[7]
Groups
In 2009, Rally America narrowed down the number of championships.  The regional rallies have many categories split into two events, such as 2 Wheel Drive being split into a separate championship for Group 2 and Group 5, as well as the addition of an Open Light. A list of the full rules can be seen at the Rally America website [8]
Open
The engine must be based on a production engine.  Displacement is limited to 1.6 liter with multipliers used for rotary, turbo charging, etc.. The body must be recognizable as the original car.  There is a minimum weight also enforced dependent on the engine.
Super Production
The chassis generation must match the appearance and modifications of the car. Thus, one can take a chassis from a 2006 Subaru WRX and put a 2003 WRX shell around it, but all parts must be allowable for a 2003 WRX.  Engine displacement cannot be more than 2.6 liter with multipliers, and a limiter is placed on any forced induction system. A minimum weight is also enforced.  Many other parts can be replaced, as long as they are an option from the manufacturer.
2 Wheel Drive
These are based on the old FIA Group 5 and Group 2 standards.  Both are limited on weight, displacement, and must be based on cars with a production of 1000 per year. Power may be sent to either the rear wheels or the front wheels.[8]