Question: Roger Morris, famous for helping to develop a 50km rail tunnel linking Folkestone to Coquelles is also famous for which other project?
Context: Roger Brian Morris (19 March 1933 – 15 June 2001) was a pioneer in railway engineering, having helped develop the rail system for the Channel Tunnel, the hovertrain project as well as a number of the railway systems in Eastern Europe and South America. Germain Sommeiller (February 15, 1815 – July 11, 1871) was a civil engineer from Savoy.  He directed the construction of the Fréjus Rail Tunnel between France and Italy, also known as the Mont Cenis Tunnel.  This was the first of a series of major tunnels built in the late 19th century to connect northern and southern Europe through the Alps.  Sommeiller pioneered the use of pneumatic drilling and dynamite to achieve record-breaking excavation speeds.  This 12.8-km tunnel was completed on December 26, 1870, 11 years ahead of schedule.  It remained the longest tunnel in the world until the opening of the Gotthard Rail Tunnel in 1882. The Schuman tunnel is a 970m long rail tunnel in Brussels.  It passes beneath avenue Clovis, square Ambiorix and the boulevard Charlemagne.  The line running through it is the double track line 161 (Brussels-Namur).  The speed limit in the tunnel is 50 km/h. Bukit Berapit Rail Tunnel is the longest rail tunnel in Malaysia.  It is located in Bukit Berapit near Bukit Gantang, Perak, Malaysia.  It was made as a part of Ipoh-Padang Besar Electrified Double Tracking Project. Delft is the main railway station of Delft, the Netherlands, located on a section of the oldest railway line in the country, between the cities of The Hague and Rotterdam.  Along with a new 2.3 km rail tunnel under the city centre, the current station opened on 28 February 2015.  The new building, which integrates the station hall with the city's municipal offices, was designed by Mecanoo, an international architecture firm that originated in Delft.  The project also included a rebuilt bus station, tram stops and improved bicycle parking. The Fréjus Rail Tunnel (also called Mont Cenis Tunnel) is a rail tunnel of 13.7 km length in the European Alps, carrying the Turin–Modane railway through Mount Cenis to an end-on connection with the Culoz–Modane railway and linking Bardonecchia in Italy to Modane in France.  Its mean altitude is 1,123 m and it passes beneath the "Pointe du Fréjus" (2,932 m) and the "Col du Fréjus" (2,542 m). The Lyttelton Rail Tunnel, initially called the Moorhouse Tunnel, links the city of Christchurch with the port of Lyttelton in the Canterbury region of New Zealand’s South Island.  It is the country’s oldest operational rail tunnel, and is on the Lyttelton Line, one of the first in the province.  On completion in 1867 it became the first tunnel in the world to be taken through the side of an extinct volcano, and at 2.7 km, the longest in the country.  Its opening made the Ferrymead Railway, New Zealand's first public railway line, obsolete. The Saverne Tunnel (French: "Tunnel de Saverne" ), also known as the Ernolsheim-lès-Saverne Tunnel (French: "Tunnel d'Ernolsheim-lès-Saverne" ), is a twin-bore, high-speed rail tunnel in western Bas-Rhin, France.  It carries the LGV Est line of France's TGV high-speed rail network through the narrowest part of the Vosges mountain range, beneath Mont Saint-Michel and adjacent to the Saverne Pass.  The tunnel consists of two bores, containing one railroad track each, that are connected by passageways every 500 m .  The LGV Est crosses the 270 m Haspelbaechel viaduct near the western end of the tunnel.  The tunnel was excavated by a tunnel boring machine between November 2011 and February 2013.  Civil engineering work on the tunnel ended in April 2014 and it opened with the rest of the second phase of the LGV Est on 3 July 2016.  The total cost of the tunnel was approximately €200 million. The Morris–Jumel Mansion, also known as the Roger and Mary Philipse Morris House, "Mount Morris" and other similar names, located at 65 Jumel Terrace in Roger Morris Park in the Washington Heights neighborhood of Manhattan, New York City, is the oldest house in the borough.  It was built in 1765 by Roger Morris, a British military officer, and served as a headquarters for both sides in the American Revolution. The Channel Tunnel (French: "Le tunnel sous la Manche" ; also nicknamed Chunnel) is a 50.45 km rail tunnel linking Folkestone, Kent, in the United Kingdom, with Coquelles, Pas-de-Calais, near Calais in northern France, beneath the English Channel at the Strait of Dover.  At its lowest point, it is 75 m deep below the sea bed, and 115 m below sea level.  At 37.9 km , the tunnel has the longest undersea portion of any tunnel in the world, although the Seikan Tunnel in Japan is both longer overall at 53.85 km and deeper at 240 m below sea level.  The speed limit for trains in the tunnel is 160 km/h .
Answer: the hovertrain project