So everytime i run this code i keep getting different graphs that comes up but the graph that i want to be permanent is this graph. So my request is to please use this code and change it to get the graph that you see in the picture. Also for the lines keep the same lines but could ypu please make the orange line to stop at $30$ and you can leave the blue line stop at $40.$

Use matlab to fix this code please.

$\%$ Sample data for Diesel and PetrolcarPosition $=$ linspace$(6,40,50)$; $\%$ Assumed positions of carsCO$2$Diesel $=25+5*$cos$($carPosition$/60*2*$pi$)+$ randn$(1,50)*5$; $\%$ Random data for DieselCO$2$Petrol $=20+5*$sin$($carPosition$/60*2*$pi$)+$ randn$(1,50)*5$; $\%$ Random data for Petrol$\%$ Fit polynomial curvespDiesel $=$ polyfit$($carPosition$,$ CO$2$Diesel, $3)$;pPetrol $=$ polyfit$($carPosition$,$ CO$2$Petrol, $3)$;$\%$ Generate points for best fit linesfitDiesel $=$ polyval$($pDiesel$,$ carPosition$)$;fitPetrol $=$ polyval$($pPetrol$,$ carPosition$)$;$\%$ Plotting the datafigure;hold on;scatter$($carPosition$,$ CO$2$Diesel, $\text{'}$o$\text{'},$ 'MarkerEdgeColor', $[10\mathrm{.}50])$; $\%$ Diesel datascatter$($carPosition$,$ CO$2$Petrol, $\text{'}$o$\text{'},$ 'MarkerEdgeColor', $[00\mathrm{.}51])$; $\%$ Petrol dataplot$($carPosition$,$ fitDiesel, 'Color', $[10\mathrm{.}50],$ 'LineWidth', $2)$; $\%$ Diesel best fitplot$($carPosition$,$ fitPetrol, 'Color', $[00\mathrm{.}51],$ 'LineWidth', $2)$; $\%$ Petrol best fit$\%$ Customize the plotxlabel$(\text{'}$Car Position'$)$;ylabel$(\text{'}$CO$2$ Weighted Percentage'$)$;title$(\text{'}$Weighted CO$2$ Emissions'$)$;legend$(\text{'}$Diesel$\text{'},$ 'Petrol', 'Diesel Best Fit', 'Petrol Best Fit'$)$;grid on;hold off;