Creating an array of object with variable inputs

I have the following codes

 Number_of_lanes = input('Enter the total number of lanes: ');
Prediction_Horizon = input('Enter the prediction horizon in sec: ');    % In sec
time_step = 1;                                                          % In sec
Total_number_of_cars = input('Enter the total number of cars: ');
Number_of_cars_in_lane = zeros(Number_of_lanes,1);
Sum_of_cars = 0;
Velocity_Min = ((20)/(3.6));                                            % In m/sec
Velocity_Max = ((80)/(3.6));                                            % In m/sec
acceleration_Min = -8;                                                  % In m/sec^2
acceleration_Max = 8;                                                   % In m/sec^2
s0 = 2;                                                                 % Safety distance in m
desired_velocity = ((80)/(3.6));                                        % In m/sec
width_of_lane = 3.5;                                                    % In m
time_headway = 2;                                                       % In sec
%Assigning number of cars in each lane                              
for i = 1:Number_of_lanes         
    Number_of_cars_in_lane(i) = input(['Number of cars in lane ' num2str(i) ' : ']);
    Sum_of_cars = sum(Number_of_cars_in_lane);      
end
%Error Handling
if Sum_of_cars ~= Total_number_of_cars
        error('Number of cars in lane must be equal to total number of cars');
end
% Empty template of each car
empty_car.velocity = [];                            % velocity of car
empty_car.acceleration = [];                        % acceleration of car
empty_car.lane =[];                                 % lane of car
empty_car.s_required = [];                          % spacing required  in front of car
empty_car.s_actual = [];                            % actual spacing in front of car
empty_car.position = [];                            % postion of car in lane                           
empty_car.distance_travelled = [];                  % distance travelled by car in last second
empty_car.velocity_min = Velocity_Min;              % mimimum allowable velocity
empty_car.velocity_max = Velocity_Max;              % maximum allowable velocity
empty_car.acceleration_min = acceleration_Min;      % minimum allowable acceleration
empty_car.acceleration_max = acceleration_Max;      % maximum allowable acceleration
empty_car.Objective = [];                           % objective function value
% Creating cars with parameters
Cars = repmat(empty_car, Total_number_of_cars, Number_of_lanes, Prediction_Horizon);

How can I convert this into an array of object class.