The mod will add 221 sports and supercars to the traffic:

List:
9ff GT9;
AC 378 GT Zagato;
Alfa Romeo 4C, 8C Competizione;
Alpine A110;
Arash AF10;
Ascari A10, KZ1;
Aston Martin One 77, DB9 Volante, Rapide, Vulcan, Vantage ('98, '18), Virage, Vanquish '01, DB7 Zagato, V12 Vantage;
Audi R8('10, '19), TT('04, '09, '16);
Bentley Continental (Supersport '10, GT '18);
BMW i8, Z3(E36/8), Z4(E86, E89, G29), Z8, 8(G14);
Bugatti Veyron, Chiron, EB110, Divo;
Chrysler Crossfire;
Donkervoort D8 GTO;
Falcon F7;
Ferrari LaFerrari, 612 Scaglietti, GTC4Lusso, California, F40, F50, Enzo, 360 Modena, 458 Italia, F430, F355, FF, 599 GTO, 812 Superfast, 488 Pista, F12berlinetta, SF90 Stradale;
Fiat Coupe, Barchetta;
Fisker Karma;
Ford GT('06, '17);
Ginetta F400;
GTA Spano;
Gumpert Apollo N;
Hennessey Venom GT
Honda NSX('05, '17), S2000, CR-X Del Sol, CR-X '91, Prelude, Integra('00, '02);
HTT Plethore LC-750;
Hyundai Coupe, Genesis Coupe('10, '13);
Icona Vulcano;
Italdesign Zerouno;
Jaguar XJ220, F-Type, XK('02, '10);
Kepler Motion;
Koenigsegg One:1, Regera, CC8S;
Lamborghini Gallardo, Diablo, Veneno, Aventador, Centenario, Murcielago, Reventon, Countach;
Lexus LFA, SC430, LC 500;
Lotus Exige S Roadster, Evora, Elise('99, '05), Exige '06, Espirit '02;
Lucra L148;
Maserati Gransport, GranTurismo, MC12, Spyder;
Mazda RX-7, RX-8, MX-5('94, '07);
Mazzanti Evantra;
Mercedes-Benz SLS AMG GT, SLK(R171, R172), SL(R230, R231), SLR McLaren Roadster, AMG GTR, CLK63 AMG, 190 Evo II;
McLaren 570s, P1, 720S, F1, 12C, 675LT;
Mitsubishi Eclipse('95, '03, '12), Starion, 3000GT;
Morgan Aero SuperSports;
Mosler MT900;
Nio EP9;
Nissan GT-R, 350Z, 370Z;
Noble M600, M12;
Onuk Sazan;
Opel Speedster;
Pagani Huayra, Zonda;
Peugeot RCZ;
Pininfarina Battista;
Porsche 911(993, 997), 718 Boxster, Carrera GT, Cayman(981), 959, 944;
Rezvani Beast Alpha;
Rimac Concept One, C Two;
Rossion Q1;
Ruf CTR3, 3800S, SCR;
Savage Rivale Roadyacht;
Sbarro Alcador;
Scuderia Cameron Glickenhaus SCG003;
Spada Vetture Sport Codatronca;
Spyker C8 Aileron, C12 Zagato;
SSC Ultimate Aero;
Subaru Impreza WRX STI(GD, GH, GV);
Toyota GT86, Celica('92, '94, '03), Supra('92, '98, '19), MR2('89, '95, Roadster);
TVR Sagaris, Tuscan, Typhon;
Ultima GTR;
Vauxhall Monaro;
Vencer Sarthe;
W Motors Fenyr Supersport, Lykan Hypersport;
Wiesmann MF3, GT MF5;
Zenvo ST1;

Compatible with Jazzycat packs

You must have two files connected:

sport_cars_traffic_pack_by_TrafficManiac_v8. 9_base.scs
and
sport_cars_traffic_pack_by_TrafficManiac_v8. 9_def.scs (with default traffic)
or
sport_cars_traffic_pack_by_TrafficManiac_v8.9_jaz. scs (with the AI Traffic Pack from Jazzycat)
If you want to have many sports cars everywhere, use only one file
sport_cars_traffic_pack_by_TrafficManiac_v8.9_base.scs

Version 8.9 for Euro Truck Simulator 2 (v1. 41. x):

Added Mercedes-Benz SL ' 03 and Felino CB7

Changes in 8.8
Added Audi R8 Spyder and BMW M3 GTR

Changes in 8.7
Added Ford Racing Puma, fixed minor errors in car definitions, improved country definitions, optimized some car models

Changes in 8.6.2
The pack is adapted for 1.41